QUESTION 1 The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness SS of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the eccentricity is 325 mm below the beam centroid, find the stresses at midspan a) under the self-weight of the beam only if the short-term losses is 20% b) under service load if the prestress is reduced to an additional 10%

QUESTION 1 The cross section of an I beam has top and bottom flanges having a width of 400mm and a thickness SS of 200mm. The web is 150 mm wide. The beam is 15m long and simply supported. It carries a uniformly distributed imposed load of 12 kN/m. If the initial prestress is 1100 kN and the eccentricity is 325 mm below the beam centroid, find the stresses at midspan a) under the self-weight of the beam only if the short-term losses is 20% b) under service load if the prestress is reduced to an additional 10%

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter10: Plate Girders

Section: Chapter Questions

Problem 10.7.9P

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